From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Szymon Janc <szymon.janc@tieto.com>,
Johan Hedberg <johan.hedberg@intel.com>,
Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Subject: [ 06/15] Bluetooth: Fix sending HCI commands after reset
Date: Fri, 1 Feb 2013 11:48:39 +0100 [thread overview]
Message-ID: <20130201104756.932548260@linuxfoundation.org> (raw)
In-Reply-To: <20130201104756.470588207@linuxfoundation.org>
3.0-stable review patch. If anyone has any objections, please let me know.
------------------
From: Szymon Janc <szymon.janc@tieto.com>
commit dbccd791a3fbbdac12c33834b73beff3984988e9 upstream.
After sending reset command wait for its command complete event before
sending next command. Some chips sends CC event for command received
before reset if reset was send before chip replied with CC.
This is also required by specification that host shall not send
additional HCI commands before receiving CC for reset.
< HCI Command: Reset (0x03|0x0003) plen 0 [hci0] 18.404612
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 18.405850
Write Extended Inquiry Response (0x03|0x0052) ncmd 1
Status: Success (0x00)
< HCI Command: Read Local Supported Features (0x04|0x0003) plen 0 [hci0] 18.406079
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 18.407864
Reset (0x03|0x0003) ncmd 1
Status: Success (0x00)
< HCI Command: Read Local Supported Features (0x04|0x0003) plen 0 [hci0] 18.408062
> HCI Event: Command Complete (0x0e) plen 12 [hci0] 18.408835
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/bluetooth/hci_event.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1823,7 +1823,7 @@ static inline void hci_cmd_complete_evt(
if (ev->opcode != HCI_OP_NOP)
del_timer(&hdev->cmd_timer);
- if (ev->ncmd) {
+ if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags)) {
atomic_set(&hdev->cmd_cnt, 1);
if (!skb_queue_empty(&hdev->cmd_q))
tasklet_schedule(&hdev->cmd_task);
next prev parent reply other threads:[~2013-02-01 10:48 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20130201104756.470588207@linuxfoundation.org>
2013-02-01 10:48 ` [ 01/15] can: c_can: fix invalid error codes Greg Kroah-Hartman
2013-02-01 10:48 ` [ 02/15] can: ti_hecc: " Greg Kroah-Hartman
2013-02-01 10:48 ` [ 03/15] can: pch_can: " Greg Kroah-Hartman
2013-02-01 10:48 ` [ 04/15] fs/cifs/cifs_dfs_ref.c: fix potential memory leakage Greg Kroah-Hartman
2013-02-01 10:48 ` [ 05/15] ARM: DMA: Fix struct page iterator in dma_cache_maint() to work with sparsemem Greg Kroah-Hartman
2013-02-01 10:48 ` Greg Kroah-Hartman [this message]
2013-02-01 10:48 ` [ 07/15] ath9k_htc: Fix memory leak Greg Kroah-Hartman
2013-02-01 10:48 ` [ 08/15] ath9k: fix double-free bug on beacon generate failure Greg Kroah-Hartman
2013-02-01 10:48 ` [ 09/15] ALSA: usb-audio: fix invalid length check for RME and other UAC 2 devices Greg Kroah-Hartman
2013-02-01 10:48 ` [ 10/15] EDAC: Test correct variable in ->store function Greg Kroah-Hartman
2013-02-01 10:48 ` [ 11/15] Bluetooth: Fix incorrect strncpy() in hidp_setup_hid() Greg Kroah-Hartman
2013-02-01 10:48 ` [ 12/15] smp: Fix SMP function call empty cpu mask race Greg Kroah-Hartman
2013-02-01 10:48 ` [ 13/15] x86/msr: Add capabilities check Greg Kroah-Hartman
2013-02-01 10:48 ` [ 14/15] efi, x86: Pass a proper identity mapping in efi_call_phys_prelog Greg Kroah-Hartman
2013-02-01 10:48 ` [ 15/15] x86/Sandy Bridge: Sandy Bridge workaround depends on CONFIG_PCI Greg Kroah-Hartman
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